Steps to disable all IPv6 related services / configs on Aria Operations appliances.
VMware Aria Operations 8.x
Please follow the steps below to modify the configuration then reboot all Aria Operations nodes in the cluster.
Follow the procedure in Snapshot Creation in VMware Aria Operations to take cluster offline then create snapshot for each Aria Operations node in the cluster;
Run these commands on the Aria Operations cluster nodes one by one.
Disable IPv6 for sendmail:
sed -i -e '/^[^#]*O DaemonPortOptions=Addr=::1,Port=smtp,Name=MTA,Family=inet6/s/^/# /' /etc/mail/sendmail.cf
Disable IPv6 for ntp:
sed -i -e '/restrict -6 ::1/s/^/# /' -e '$a\interface ignore wildcard' /etc/ntp.conf
Disable IPv6 at kernel:
sed -i '/^photon_cmdline/ s/$/'" ipv6.disable=1"'/' /boot/photon.cfg
Reboot the node from the command line or from the vCenter.